Send NavigationButtonPressed event also on Swipe-Back on screen (#8222)

* Send NavigationButtonPressedEvent also on Swipe-Back on screen

* little cleanup

* documentation update

Author: markdevocht

ios/RNNNavigationOptions.h

@@ -36,6 +36,7 @@ extern const NSInteger BLUR_TOPBAR_TAG;
 @property(nonatomic, strong) WindowOptions *window;
 
 @property(nonatomic, strong) Bool *popGesture;
+@property(nonatomic, strong) Bool *navigationButtonEventOnSwipeBack;
 @property(nonatomic, strong) Image *backgroundImage;
 @property(nonatomic, strong) Image *rootBackgroundImage;
 @property(nonatomic, strong) Text *modalPresentationStyle;

ios/RNNNavigationOptions.mm

@@ -41,6 +41,7 @@ - (instancetype)initWithDict:(NSDictionary *)dict {
     self.window = [[WindowOptions alloc] initWithDict:dict[@"window"]];
 
     self.popGesture = [[Bool alloc] initWithValue:dict[@"popGesture"]];
+    self.navigationButtonEventOnSwipeBack = [[Bool alloc] initWithValue:dict[@"navigationButtonEventOnSwipeBack"]];
     self.backgroundImage = [ImageParser parse:dict key:@"backgroundImage"];
     self.rootBackgroundImage = [ImageParser parse:dict key:@"rootBackgroundImage"];
     self.modalPresentationStyle = [[Text alloc] initWithValue:dict[@"modalPresentationStyle"]];
@@ -73,6 +74,8 @@ - (RNNNavigationOptions *)mergeOptions:(RNNNavigationOptions *)options {
 
     if (options.popGesture.hasValue)
         result.popGesture = options.popGesture;
+    if (options.navigationButtonEventOnSwipeBack.hasValue)
+        result.navigationButtonEventOnSwipeBack = options.navigationButtonEventOnSwipeBack;
     if (options.backgroundImage.hasValue)
         result.backgroundImage = options.backgroundImage;
     if (options.rootBackgroundImage.hasValue)
@@ -104,6 +107,7 @@ - (RNNNavigationOptions *)copy {
     [newOptions.window mergeOptions:self.window];
 
     newOptions.popGesture = self.popGesture;
+    newOptions.navigationButtonEventOnSwipeBack = self.navigationButtonEventOnSwipeBack;
     newOptions.backgroundImage = self.backgroundImage;
     newOptions.rootBackgroundImage = self.rootBackgroundImage;
     newOptions.modalPresentationStyle = self.modalPresentationStyle;

ios/StackControllerDelegate.mm

@@ -26,9 +26,27 @@ - (instancetype)initWithEventEmitter:(RNNEventEmitter *)eventEmitter {
 - (void)navigationController:(UINavigationController *)navigationController
       willShowViewController:(UIViewController *)viewController
                     animated:(BOOL)animated {
-    if (_presentedViewController &&
-        ![navigationController.viewControllers containsObject:_presentedViewController]) {
-        _isPopping = YES;
+    if (_presentedViewController) {
+        if (![navigationController.viewControllers containsObject:_presentedViewController]) {
+            _isPopping = YES;
+        }
+        
+        id<UIViewControllerTransitionCoordinator> coordinator = navigationController.transitionCoordinator;
+        if (coordinator && coordinator.isInteractive) {
+            UIViewController *poppingViewController = _presentedViewController;
+            [coordinator notifyWhenInteractionChangesUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext> context) {
+                if (!context.isCancelled) {
+                    if ([poppingViewController conformsToProtocol:@protocol(RNNLayoutProtocol)]) {
+                        UIViewController<RNNLayoutProtocol> *rnnVC = (UIViewController<RNNLayoutProtocol> *)poppingViewController;
+                        if ([rnnVC.options.navigationButtonEventOnSwipeBack withDefault:NO]) {
+                            NSString *buttonId = [rnnVC.options.topBar.backButton.identifier withDefault:@"RNN.back"];
+                            [self->_eventEmitter sendOnNavigationButtonPressed:rnnVC.layoutInfo.componentId
+                                                                      buttonId:buttonId];
+                        }
+                    }
+                }
+            }];
+        }
     }
 }
 

website/docs/api/options-root.mdx

@@ -141,6 +141,14 @@ Enable or disable swipe back to pop gesture.
 | ------- | -------- | -------- |
 | boolean | No       | iOS      |
 
+## `navigationButtonEventOnSwipeBack`
+
+Enable NavigationButtonPressed event sending on Swipe-back on pushed VC.
+
+| Type    | Required | Platform | Default |
+| ------- | -------- | -------- | ------- |
+| boolean | No       | iOS      | false   |
+
 ## `backgroundImage`
 
 Background image of the screen.